:root { --friendai-primary: #315b45; --friendai-primary-hover: #264a38; --friendai-bg: #f7f7f5; --friendai-surface: #fff; --friendai-text: #1a1a1a; --friendai-muted: #5c5c5c; --friendai-border: #e0e0dd; }
body { background: var(--friendai-bg); color: var(--friendai-text); font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.navbar-brand { color: var(--friendai-primary) !important; font-weight: 600; }
.friendai-shell { display: grid; grid-template-columns: 3fr 2fr; gap: 1rem; height: calc(100vh - 140px); padding: 1rem; }
.friendai-response-window, .friendai-chat-tape { background: var(--friendai-surface); border: 1px solid var(--friendai-border); border-radius: 8px; display: flex; flex-direction: column; overflow-y: auto; padding: 1rem; }
.friendai-response-window { justify-content: flex-start; }
.friendai-chat-tape { justify-content: flex-end; }
.friendai-composer { display: flex; gap: .5rem; margin-top: 1rem; }
.friendai-composer textarea { border: 1px solid var(--friendai-border); border-radius: 6px; flex: 1; min-height: 60px; padding: .5rem; resize: vertical; }
.friendai-composer button { background: var(--friendai-primary); border: 0; border-radius: 6px; color: #fff; padding: .5rem 1.25rem; }
.friendai-safety-notice { background: #fff8e6; border-left: 4px solid #d4a72c; border-radius: 4px; color: #5c4813; margin: 0 1rem 1rem; padding: .75rem 1rem; }
.friendai-empty-state { color: var(--friendai-muted); padding: 2rem 1rem; text-align: center; }
.friendai-empty-state ul { list-style: none; padding: 0; }
.friendai-empty-state button { background: none; border: 1px solid var(--friendai-border); border-radius: 6px; padding: .4rem .8rem; }
footer.friendai-footer { border-top: 1px solid var(--friendai-border); color: var(--friendai-muted); font-size: .85rem; padding: .75rem 1rem; text-align: center; }
footer.friendai-footer a { color: var(--friendai-muted); margin: 0 .5rem; text-decoration: none; }
.friendai-citation-panel { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--friendai-border); font-size: .85rem; color: var(--friendai-muted); }
.friendai-citation-snippet { margin: .5rem 0 0; padding: .5rem; background: #f7f7f5; border-radius: 4px; font-size: .8rem; line-height: 1.4; }

.friendai-account-card {
  background: var(--friendai-surface);
  border: 1px solid var(--friendai-border);
  border-radius: 8px;
  padding: 1rem;
  height: 100%;
}

.friendai-account-card h2 {
  color: var(--friendai-primary);
  margin-bottom: 0.75rem;
}

.friendai-account-card dt {
  color: var(--friendai-muted);
  font-weight: 500;
}

.friendai-memory-row { display: flex; justify-content: space-between; }

.landing-section {
  padding: 3rem 0;
  border-bottom: 1px solid var(--friendai-border);
}

.landing-section:last-of-type {
  border-bottom: none;
}

.landing-hero {
  padding: 5rem 0;
  background: linear-gradient(180deg, #ffffff 0%, var(--friendai-bg) 100%);
}

.landing-hero h1 {
  color: var(--friendai-primary);
  font-weight: 600;
}

.landing-hero .lead {
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  color: var(--friendai-muted);
}

.landing-solution {
  background: #f4f8f5;
}

.landing-card {
  background: var(--friendai-surface);
  border: 1px solid var(--friendai-border);
  border-radius: 8px;
  padding: 1rem;
  height: 100%;
}

.landing-card h3 {
  color: var(--friendai-primary);
}

.landing-screenshot-slot {
  background: #ececeb;
  border: 2px dashed var(--friendai-border);
  border-radius: 8px;
  padding: 4rem 2rem;
  text-align: center;
}

.landing-faq {
  border-bottom: 1px solid var(--friendai-border);
  padding: 0.75rem 0;
}

.landing-faq summary {
  cursor: pointer;
  font-weight: 500;
  color: var(--friendai-primary);
}

.landing-faq p {
  margin: 0.5rem 0 0 0;
  color: var(--friendai-muted);
}

.landing-final-cta {
  background: var(--friendai-primary);
  color: #ffffff;
}

.landing-final-cta h2 {
  color: #ffffff;
}

.landing-final-cta .btn-primary {
  background: #ffffff;
  color: var(--friendai-primary);
  border-color: #ffffff;
}

.landing-final-cta .btn-primary:hover {
  background: var(--friendai-bg);
  color: var(--friendai-primary-hover);
}

.admin-content {
  background: #ffffff;
}

.btn-success {
  background-color: var(--friendai-primary);
  border-color: var(--friendai-primary);
}

.btn-success:hover {
  background-color: var(--friendai-primary-hover);
  border-color: var(--friendai-primary-hover);
}

.friendai-page {
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 992px) {
  .friendai-page {
    max-width: 66.66%;
  }
}

.friendai-shell {
  width: 100%;
}

@media (min-width: 992px) {
  .friendai-shell {
    max-width: 66.66%;
    min-width: 900px;
    margin: 0 auto;
  }
}

.friendai-shell { display: grid; grid-template-columns: 50fr 6px 50fr; gap: 0; height: calc(100vh - 140px); padding: 1rem; width: 100%; }
.friendai-left-pane, .friendai-right-pane { background: var(--friendai-surface); border: 1px solid var(--friendai-border); border-radius: 8px; display: flex; flex-direction: column; overflow-y: auto; padding: 1rem; min-width: 0; }
.friendai-left-pane { gap: .75rem; }
.friendai-avatar-window { aspect-ratio: 4 / 3; background: #ececeb; border: 2px dashed var(--friendai-border); border-radius: 8px; flex: 0 0 auto; }
.friendai-history-section { border: 1px solid var(--friendai-border); border-radius: 6px; flex: 1 1 0; min-height: 3rem; padding: .5rem; }
.friendai-divider { background: transparent; cursor: col-resize; position: relative; width: 6px; }
.friendai-divider::after { background: var(--friendai-border); border-radius: 3px; content: ""; left: 2px; position: absolute; top: 45%; bottom: 45%; width: 2px; }
.friendai-divider:focus-visible { outline: 2px solid var(--friendai-primary); outline-offset: 2px; }
.friendai-divider:hover::after, .friendai-divider.dragging::after { background: var(--friendai-primary); top: 0; bottom: 0; }
.friendai-right-pane { gap: .75rem; }
.friendai-right-pane #response-window { flex: 0 0 auto; max-height: 40%; }
.friendai-right-pane #messages { flex: 1 1 auto; overflow-y: auto; }
@media (max-width: 991px) { .friendai-shell { grid-template-columns: 1fr; } .friendai-divider { display: none; } }

/* ===== mobile collapse (<=375px) ===== */
.friendai-avatar-banner, .friendai-sheet-close, .friendai-history-toggle { display: none; }
@media (max-width: 375px) {
  body { overflow-x: hidden; }
  .friendai-shell { display: flex; flex-direction: column; height: calc(100vh - 120px); padding: .5rem; min-width: 0; max-width: 100%; }
  .friendai-divider { display: none; }
  .friendai-left-pane { background: var(--friendai-surface); border-radius: 8px 8px 0 0; bottom: 0; left: 0; max-height: 70vh; overflow-y: auto; position: fixed; right: 0; transform: translateY(100%); transition: transform .2s ease; z-index: 1000; }
  .friendai-left-pane.is-open { transform: translateY(0); }
  .friendai-sheet-close { background: transparent; border: 0; color: var(--friendai-muted); display: block; font-size: 1.25rem; position: absolute; right: .5rem; top: .5rem; }
  .friendai-avatar-banner { align-items: center; background: var(--friendai-surface); border: 1px solid var(--friendai-border); border-radius: 8px; display: flex; flex: 0 0 80px; height: 80px; justify-content: center; margin-bottom: .5rem; position: relative; }
  .friendai-avatar-banner.is-hidden { display: none; }
  .friendai-avatar-banner-name { color: var(--friendai-primary); font-weight: 600; }
  .friendai-avatar-banner-hide { background: transparent; border: 0; color: var(--friendai-muted); position: absolute; right: .5rem; top: .25rem; }
  .friendai-right-pane { flex: 1 1 auto; min-height: 0; overflow: hidden; padding: .5rem; }
  .friendai-right-pane #response-window { max-height: 30%; }
  .friendai-right-pane #messages { overflow-y: auto; }
  .friendai-composer-row { align-items: flex-end; display: flex; gap: .5rem; }
  .friendai-history-toggle { background: var(--friendai-surface); border: 1px solid var(--friendai-border); border-radius: 6px; color: var(--friendai-primary); display: inline-block; padding: .5rem .75rem; }
  .friendai-composer { flex: 1 1 auto; }
  #avatar-window { display: none; }
}